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当前位置: 首页 > 文章 > 杨树树冠分维数与生长的相关关系 南京林业大学学报(自然科学版) 2005,29 (2) 46-49
Position: Home > Articles > The Relationship Between Growth and Fractal Dimension of Crown in Poplar Journal of Nanjing Forestry University(Natural Sciences Edition) 2005,29 (2) 46-49

杨树树冠分维数与生长的相关关系

作  者：
李火根;潘惠新;严相进;邓建国;黄敏仁;王明庥
单  位：
江苏省泗阳林业中心;江苏省泗阳农场;南京林业大学森林资源与环境学院
关键词：
杨树;分维数;生长;相关
摘  要：
对用分维数表示的杨树冠层特征与生长量之间的关系进行研究。参试的 28 个杨树无性系 4 年生时的生长量存在显著的差异;用盒维数法表示的分维数(FD99)在无性系间也存在显著的差异,而用双表面积法估算的树冠分维数(FDa、FDv)在无性系间差异未达显著水平。相关分析表明:胸径与树高之间相关显著;而除用盒维数法表示的树冠分维数(FD99)与胸径生长相关达极显著水平外,其他情况树冠分维数与生长相关均未达显著性水平,表明并非叶面积越大生长量越大;树冠分维数与胸径生长相关明显大于与树高生长的相关。
译  名：
The Relationship Between Growth and Fractal Dimension of Crown in Poplar
作  者：
LI Huo-gen~1,PAN Hui-xin~1,YAN Xiang-jin~2,DENG Jian-guo~3,HUANG Min-ren~1,WANG Ming-xiu~1(1.College of Forest Resources and Environment Nanjing Forestry University,Nanjing 210037,China;2.Siyang ForestryCenter Jiangsu Province,Siyang 223701,China;3.Siyang Farm Jiangsu Province,Siyang 223703,China)
关键词：
Poplar;Fractal dimension;Growth;Correlation
摘  要：
The correlation between growth and crown characteristics in terms of fractal dimension was explored based on the investigation of a 4-year-old poplar plantation which was established at Siyang Farm,Jiangsu province in 1997.A significant difference was found among clones both for growth traits and fractal dimension(FD (99)) which was estimated by the method of box-counting,but for the other two fractal dimensions(FD a,FD v) obtained by the two-surface method,no significant difference was found among clones although the difference was examined.The results also showed that there was a significant positive correlation between diameter at breast height and height,however,no significant correlation was found among fractal dimensions and growth except a significant correlation between FD (99) and diameter at breast height,which means a poplar tree with much more foliage may not have bigger growth.A trend was also explored that,compared with height growth,diameter growth had closer correlation with fractal dimensions of crown.

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